There are a lot of crappy quarterbacks out there. If you dump Dak and get one of them, the franchise will be screwed for a while. Dak isn't terrible. He seems like a good guy, is durable and mobile.
OTOH, he certainly isn't a top 5 QB. His accuracy issues continue. Blough looked like a better thrower of the football than him today.
IMO, the team can with with Dak as QB but you need better coaching and very good talent around him. The Cowboys already screwed up by giving Zeke that massive deal and Tank's isn't much better. Giving Dak some massive $40m per year deal will just make it that much harder to build a title winner.
I'm reading up on it and I think I understand the non exclusive franchise tag. I would give it to Dak. Offer him Kirk Cousins money and put the tag on him. If some other team signs him, you can either match it or if its stupid money, just take the 2 1st round picks. Obviously, I would shop him also but I would only give him up for a pretty good haul.
IMO, this version of the Cowboys is just about over. The vaunted O-line is no longer vaunted and is just . . . . overpaid. The Zeke deal already looks like an albatross. Cooper kind of carries this team and might leave. Byron Jones and Quinn too. If the Cowboys can jump start a turnaround by trading guys for picks, getting a new coach, etc., it makes sense to do so.